The leaders of Germany, France and Italy are in Ukraine on their first visit to the country since the start of Russia's invasion.
The trio just met Ukrainian President Volodymyr Zelenskyy in Kyiv.
The EU leaders earlier toured the town of Irpin, which saw heavy fighting at the start of this war.
Ukrainian officials showed them the wasteland of ruined buildings and broken cars.
Kyiv claims Russian forces committed numerous atrocities in Irpin, including shooting at cars carrying women and children.
Mr. Macron affirmed that the war crimes were clearly carried out in the broken city.
But the bigger agenda on the leaders' visit is the support that they can provide to Ukraine.
German Chancellor Olaf Scholz says that he and his fellow leaders want to assure Kyiv that financial, humanitarian and military help will continue.
Mr. Macron meantime also emphasized that the defenders must be able to resist Russia and win the day.